膝关节置换手术导航系统精度测量方法及实现

目的：设计并实现了一种膝关节置换手术导航系统精度的精确检测方法，可对膝关节置换手术导航系统的参数进行测量与定量分析。方法：检测系统采用激光跟踪仪、定位靶球和骨锯模拟工装采集导航系统的定位平面空间坐标，依据定位靶球的空间位置计算得到导航系统的定位精度，实现了导航系统精度的精确检测。结果：本检测方法在某品牌的膝关节置换手术导航系统上进行了多次实验与分析，计算得到导航系统的定位位置准确度、定位位置重复性、定位姿态准确度、定位姿态重复性等检测数据，并对检测数据进行有效性分析。结论：本检测方法操作简洁，可重复性高，检测数据准确，可有效帮助技术人员完成导航系统的定位精度检测工作。

Measurement of the accuracy of total knee replacement navigation system and method implementation

Abstract: Objective To propose an approach to measure and quantify the parameters of total knee replacement navigation system, thereby realizing the measurement of the accuracy of the navigation system. Methods The test system used laser tracker, spherically mounted retro-reflectors and saw simulation tool to capture the location and orientation of the positioning plane of the navigation system. The spatial coordinates of the spherically mounted retro-reflectors were utilized to calculate the positioning geometry data of the navigation system for accurately measuring the precision and accuracy of the navigation system. Results The proposed method was applied on a total knee replacement navigation system for several rounds of measurements and analysis. The positioning location accuracy, positioning location repeatability, positioning orientation accuracy and positioning orientation repeatability of the navigation system were calculated, and the validity of the test data was analyzed. Conclusion The proposed method which is easy to operate, with high repeatability and accurate test results can effectively help technicians test and analyze the positioning accuracy of the navigation system.